There are relatively no secondaries for programs. I had one program have me do a “supplemental” application AFTER i got an interview.
Nobody applies for AOA and when that is announced is dependent on your school.
Grading for clerkships is also school dependent. Mine does H/HP/P. Some use letters. Some are P/F. Some do H/P/F.
For Step 1, don’t “seriously” study for Step 1 during first year. Anki is good for retention of stuff, though. First Aid because your best friend during second year.